<template>
  <div>
    <!--面包屑导航-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--  卡片视图区域-->
    <el-card class="box-card">
      <!--      :gutter 间隙的大小-->
      <el-row :gutter="20">
        <el-col :span="8">
          <!--        搜索与添加区域 clearable 清空的小按钮 点击清空后 会重新调用getGoodsList-->
          <el-input v-model="queryInfo.query" placeholder="请输入内容" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>
      <!--      商品列表区域-->
      <el-table :data="goodsList" style="width: 100%" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column prop="goods_name" label="商品名称"></el-table-column>
        <el-table-column prop="goods_price" label="商品价格(元)" width="90px"></el-table-column>
        <el-table-column prop="goods_weight" label="商品重量" width="70px"></el-table-column>
        <el-table-column prop="add_time" label="创建时间" width="140px">
          <template v-slot="scope">
            {{scope.row.add_time|dateFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template v-slot="scope">
            <!--            修改按钮-->
            <el-tooltip class="item" effect="dark" content="修改" placement="top">
              <el-button type="primary" icon="el-icon-edit"
                         size="mini"></el-button>
            </el-tooltip>
            <!--            删除按钮-->
            <el-tooltip class="item" effect="dark" content="删除" placement="top">
              <el-button type="danger" icon="el-icon-delete"
                         size="mini" @click="removeById(scope.row.goods_id)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!--      分页-->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total" background>
      </el-pagination>
      <pre>{{goodsList}}</pre>
    </el-card>
  </div>
</template>

<script>
  export default {
    data () {
      return {
        //查询参数对象
        queryInfo: {
          //查询参数
          query: '',
          //  当前页码
          pagenum: 1,
          //  每页显示条数
          pagesize: 5
        },
        //  商品列表
        goodsList: [],
        //  总数据条数
        total: 0
      }
    },
    methods: {
      //调用api获取数据
      async getGoodsList () {
        const { data: res } = await this.$http.get('goods',
          { params: this.queryInfo })
        if (res.meta.status !== 200) return this.$message.error('获取商品列表失败！')
        this.$message.success('获取商品列表成功！')
        this.goodsList = res.data.goods
        this.total = res.data.total
      },
      handleSizeChange (newSize) {
        this.queryInfo.pagesize = newSize
        this.getGoodsList()
      },
      handleCurrentChange (newPage) {
        this.queryInfo.pagenum = newPage
        this.getGoodsList()
      },
      //删除按钮
      async removeById (goods_id) {
        //  弹出对话框
        const confirmResult = await this.$confirm('是否确认删除？', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        if (confirmResult !== 'confirm') return this.$message.info('已经取消删除！')
        const { data: res } = await this.$http.delete(`goods/${goods_id}`)
        if (res.meta.status !== 200) return this.$message.error('删除失败！')
        this.getGoodsList()
        this.$message.success('删除成功！')

      },
      goAddPage(){
      //  通过路由导航对象this.$router的push()函数 跳转到指定页面
        this.$router.push('/goods/add')
      }
    },
    created () {
      this.getGoodsList()
    }
  }
</script>

<style lang="less" scoped>

</style>
